I purchased this window A/C less than 2 months ago. It emits a horrible smell that affects my breathing. I will be returning this to the location where I purchased it as soon as my son is able to visit and remove it and carry it to the car for return. The filter is clean and not the cause of the smell. Additionally every time you turn off the unit, you have to reset everything again. The phone APP does not work properly and you have to adding it over and over again. VERY DISAPPOINTING!!